Exposing-table.



G. R. CORNWALL.

EXPOSING TABLE.

APPLICATION FILED AUG.26. 1910. 1,171,772. Patented Feb.15,1916.

4 SHEETS-SHEET I.

:rianie I 1 N 1.--1 @L G. R. CORNWALL.

xPos'ms TABLE.

APPLICATION FILED AUG.26, i910.

Patented Fen-15,1916.

4 SHEETS-SHEET 2- THE COLUMBIA PLANOURAPH C0.. WASHINGTON, D. c.

G. R. CORNWALL.

EXPOSING TABLE.

APPLICATION min Auc.z6, 1910.

1,171,772. Patented 1101.111916.

4 SHEETS-SHEET 3.

11m CQLUMMA PLANUGRAPH C0.. WASHINGTON, DY C.

G. R.4 CORNWALL.

EXPOSING TABLE.

APPLICATION FILED AuG.2s. 1910.

1,171,772. Patented Feb. 1916. I

EETS- 4.

GEORGE R. CORNWALL, F RYE, NEW YORK.

EXPOSING-TABLE.

Application filed August 26, 191D.

To all 107mm t may Concern.'

Be it known that I, GEORGE R. CoRNwALL, a citizen of the United States, and a resident of Rye, in the county of Testchester and State of New York, have invented new and useful Improvements in Exposing- Tables, of which the following is a specification.

The invention relates to exposing tables for exposing sensitized surfaces to the action of light through a design carrying medium and to the appara-tus associated therewith.

bjects of the invention are to provide novelr mechanisms for rapid and easy handling of printing plates and other surfaces, and especially those of large size; to provide novel means for rendering the frame readily and easily accessible to an operative whiin it is securely held upon its mounting; to provide novel mechanism for readily moving the exposing frame around within the shop and also outside to be exposed in the exterior light when desired; to provide a novel track for running the exposing frame on to the ioor and also out of the window; to provide novel means for rendering the exposing frame accessible from the floor while carried on an elevated track. These and other objects of invention will in part be obvious and will in part more fully appear herein.

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and forming a part hereof, illustrate one embodiment of the invention, the same serving in connection with the description herein to explain the principles of the invention. l

Qi the drawings: Figure l is an eleva.- tion showing the window of a building in section, and showing in elevation the track in position to run the frame in and out, and also showing in dotted line the track in depressed position; Fig. 2 is a plan corresponding to Fig. l; Fig. 3 is an elevation showing the frame track in cross section, the exposing frame and its mounting in elevation. and showing the exposing frame itself in two positions; Fig. 4 is an elevation looking at Fig. 3 from the left; Fig. 5 is a "i view corresponding to Fig. 3, showing the exposing frame let down into horizontal.

Specification of Letters Patent.

Patented Feb. 15, 1916.

serial No. 579,069.

position but with its supports running in the track; Fig. 6 is a sectional plan on the line A-B of Fig. 4 looking in the direction of the arrows;y and Fig. 7 is a fragmentary detail in elevation, with parts in section and parts broken away, of the mounting and control for the exposing frame.

Referring to the accompanying drawings, illustrating by way of example one embodilnent of the invention, novel means are shown in connection with a. window in the wall of a building for running a printing or exposing frame outside into the direct light and back into the building for insertion and removal. of the work in connection with means for rendering the frame handy and accessible for inserting and removing and otherwise operating upon the work.

In the present embodiment a section 1 of track is shown projecting horizontally from the bottom of the window opening 2, in the wall 3. Said track is shown supported externally of the building by means of inclined bracket arms 4 fastened beneath the tracks and against the side wall of the building. Means are also provided to counteraot any pivoting movement of the track about the point wherefitis supported by the brackets 4 and also to prevent any outward pull or rotation about the point ofl support of the arms 4 on the building wall or the point of support for the track at the bottom of the window opening 9'. For this purpose each of the rails and 6 has at its inner end, near the inner face of the building wall 3, plates 7 and 8, attached to the said track rails 5 and 6, respectively, in a suitable manner, as for instance, by being riveted thereto. Each of the plates 7 and 8 has a downwardly projecting arm or lug 9 fixed thereto, shown as a plate bearing on and also preferably fastened ,against the inner face of the building wall. The track may also be fastened directly to a window sill 10.

According to certain features of the invention a sectional track is provided interiorly of the building movable into a position on the floor of the building and from such position into alinement with the exterior section l of the track, for the purpose in such first named position of running the frame to different points within the building for inserting, removing or otherwise operating upon the work, or making interior kexposures with artificial light and in the CAD . the rails 2l and 22.

other position of running the trame out of the window when exposures are to be made outside.

The interior section of track 20 comprises These rails are movable Jrom the tloor into alinement with the eXterior track as described and for this purpose are shown pivoted respectively to a pair of arms 23 and ll near one end thereof, the arm 23 being also pir-ated to a support 25 and the arm to a support 26 on the tloor of the room, or some other suitable support. A corresponding pair or arms 27 and 28 are pivote-d3T connected to the two rails 21 and respectively, near their other ends. he arms 27 and :28 are likewise pivotally carrier, respectively, upon the supports 29 and 3G lined to the licor. Between tie rails 2l and are provided suitable stitliening devices, shown herein, as bars 3l and lllach ot said bars entends diaonally across troni one ot the tracks 2l and to the other, one end ot each of said bars being lined to one ot the track rails 2l and 22, and the other end of each bar being connected to the other rail, the two bars are also arranged transversely oi' each other, and are fastened together at their crossing point by a suitable rivet or bolt 33, or otherwise. p

Suitable means are provided tor guiding the movable section 2;() oit the track into alineinent with the liked section l. For this purpose the plates 7 and 8 project, at the sides, beyond the ends of the tracks 5 and tl, the lirst part ot' said projecting portions being straight and the outer part orp each being flared or as shown at e() and all, and a similar straight and ilaret construction is provided also upon the bottom as shown at 4Q. rllhe track rails are channeled with their open or channeled parts 'facing each other, the top, side and bottoni ot each rail cooperating with the car tor the exposing traine as more fully described hereinafter. llpon the tops and near the ends, of the rails 2l and 22, respectirely, are shown pins and elo. Hooks -lG and i7 are correspondingly pivoted upon the tops, and near the ends, of the rails 5 and 6, r spectively. llihcn the section ot the track is swung upwardly into the position shown in full lines in l from the position shown in dotted lines therein, the lett-hand ends ot the rails 2l and 9.2 will be sure to pass within the tlared edges ot the plates 7 and 8, as they pass inwardly. the straight portions oit said plates which are adjacent to but projecting bevond the corresponding ends of the rails 5 and 6 will bring the ends ot the connecting rails into exact alinement and the hooks 46 and Ll-.7 will then hook the pins 4d and l5 to rmly hold the tracks together in alinenient. The channeled torni of the rails 5 and 6 and Q1 and Q2 with the openings in the rails ot each pair lacing each other, and the top sides and bottoni of the rails cooperating with the car or mounting for the exposing trame, firmly holds the car in position against variations in position oi the traine above its support, and against the wind pressure or movement ot the iframe upon its mounting, and serres to keep it on the track securely at all times, as well as haring other advantages. rllhe rails 2l and are flared or bent downwardlj;7 on th lower sie e, as shown at ii8 in Fig. l and outwardly at the sides as shown at and 50 in lfig. 2 to permit the car to be convenienti)Y run oli onto the floor and back into the track.

Means tor el vating and lowering the tracks are provided. and the term thereof herei illustrated comprises a winch mounted in a. trame Gl. tind provided with a gear (32 with which meshes a pinion 63 on the shaft 64. rEhe shaft maj,7 be turned in a suitable manner, as by a crank il rope or chain G6 is wound about the winch 60 and passes through a single block 6T. Attached to the rope 66 are two blanches 68 and 69 terminating respectively in hooks 7G and 7l. On the outside oli the rail l is a link or ear 72 and a similar link or ear T3 is provided on the outside et the rail The exposing trame may be on the section 20 of the track in the lowered or iloor position and the hooks 70 and '7l are hooked into the ears 72 and 73. VlChe crank 65 is then turned to raise the section .20 oil' the track into alineinent with the exterior section l, that is, to the full line position sh own in F l and after the two sections ot track are alined and hooked together by the hooks Llo and 47, the hooks 70 and 7l may be unhooked and run up out ot the wav. and the exposing frame mai7 be run out upon section l of the track. Alfter the exposure is completed. the exposing trame may be run back. the hooks 70 and 7l ma)T be -re-hooked into the ears 72 and 73, and the crank S5 again used to lower the section 20 ot the track to the dotted line position shown in Fig. l.

Means ot suitable or convenient 'orm are provided for rotating the exposing frame into a vertical or horizontal. or intermediate position, as ma)T be desired, and as shown in Fig. 3. As shown herein the exposing frame 8O is provided with trunnions 8l and S2 journaled in the standards 83 and Sl. The trunnion 82 is not journaled directlji upon the standard S-l, but is shown ot' bereled or conoidal torni fitting into and inolosed within a corresponding piece 85 supported directly in the standard 84.-. and held in position by the clamping screw 8G. Fitted within the trunnion S2 is a screw bolt 8T, projecting through the center oil the shaft of the member S5 outwardly. Threaded on the projecting end ot the screw bolt 87 is Ia nut 88 to which is pivoted a handle 89. By turning the nut 88 on the screw bolt 87, the trunnion 82 may be left free to rotate in the cap 85 or be clutched or clamped tightly thereto, in order to leave the frame free to be swung, or to be clamped tightly after it has been swung to the desired position.

Novel means are provided by the invention for lowering and raising the exposing frame and for moving it to one side or the other relatively to its support to present it in the most advantageous position for handling the work and for giving the frame a horizont-al rotative movement with reference to its lower support or base. In the embodied form of such means, the standards 83y and 84 are shown of triangular form, the standard 83 comprising two legs 189 and connected at the top and extending downwardly and diverging from each other, and the standard 84 having two similar legs 91 and 92. At. their bottom end the said legs 189 and 90 are connected by a cross web 93 and the legs 91 and 92 by a cross web 94. Said standards are carried upon a table 110 which is rotatably mounted `upon the car which is adapted to run on the tracks. At their bases the Standards 83 and 84 are pivotally mounted upon a rod 95, which rod passes through apertured lugs 96 and 97 in said standards, respectively. At the other ends of their bases, said standards 83 and 84 rest upon and embrace a rod 98 by means of the recessed lugs 99. Each of said rods and 98 is carried by the table 110. Said table comprises four arms 111, 112, 115 and 116. The rod 95 is supported in the apertured ends of said arms 111 and 112 of the said table 110, said shaft being held from lateral displacement in its bearings on said arms by collars 113 and 114-. The rod 98 is carried in the apertured end of the arms 115 and 116 of the table 110 and is held from longitudinal displacement in its bearings on said arms by the collars 117 and 118. The table 110 is rotatably supported upon the car 120 by a central bearing through which passes the king pin 121, said pin 121 being fast to table 110 and projecting down through an laperture in the car 120. A pin 123 serves to fasten the pin 121 in place below the car 120. In each of the arms of the table 110 is pivoted a roller 125. which is set radially with respect to the center of rotation of the table 110. These roll.- ers run upon a circular track 130, which is a part of the car 120.

rhe car 120 is shown haring four arms 131, 132, 133 and 134 extending outwardly from its center where the table 110 is pivoted, and the track is integral with, or fixed to. said arms. A. connecting cross web 135 connects the outer ends of the arms 1,31 and 132. A similar cross web 136 connects the outer end of the arms 133 and 134. In the outer end of the arm 131 is mounted a roller 140 and in the outer end of the arm 133 a roller 141. These two rollers are at one side of the frame and when the car is on the track they run in the same channeled rail. When running on the track the rollers bear upon the bottom web of the channel while the end and top of the car 120, at the rollers, is shaped to fit within the side and top web of the channel with easy play, (see Fig. A similar roller 142 is shown pivoted in the end of the arm 132 and a roller 143 in the end of the arm 134. These are Similarly constructed and. arranged and are shown running on the bottom web of the channel 22, the side and top ends of the car 100 at this point fitting within the side and top webs of the channel in they same manner, (See Fig. 3).

Means for fastening the car and table together against rotation are provided, and the embodied form thereof comprises a clamping screw 151 having a turning head 150. Said screw ismounted in the cross web 135 of the car 120 and extending inwardly is threaded into the central boss of the car 120 and by rotation may be thrust against, and retracted from, the pivot pin 121 to firmly clamp or to release the table 110 against rotation on the car 120.

Means are provided for rocking the standards 83 and 84 about the rod 85 to bring the exposing frame down into position where it will be at a convenient height for a workman standing on the floor and so as to be free and accessible on at least three sides thereof. For this purpose a rack bar is shown pivoted on the rod 98, and a pinion 161 is carried on a stub shaft 162 journaled in the cross web 94 at its junction with the leg 92 of the standard 84. The stub shaft 162 is shown with a squared end 163, to take a crank 164. Pivotally mounted on either side of the pinion 162 are shown the pieces 165 and 166. which pass on either side of the rack bar 160. Journaled in the ends of these pieces are rollers 167 and 168, which run on the back face of the rack bar and keeps it in mesh with the pinion 161.

The manner of operation of the mechanism just described is substantially as fol- L lows: The manner of swinging the exposing table 80 on its pivots has always been described. Tfhe exposing table and its standards may be rotated about the pin 121, the supporting rollers for the table 110 running around on their track 130. When in the proper position the head 15() of screw 151 is turned to clamp the parts in the adliusted position. 7hen it is desired to lower the table, the crank 164 is fitted to the head 163, the parts being' then in the position shown in Fig. 3, and the exposing table being swung from the dotted to the full line position in said figure, or vice versa. The pinion 161 will thus travel` along the rack vent any tipping et the structure by reason of the table swinging out to one side. lt will be understood that the table may be used Without the raising and lowering tracks, and in Figs. 3 and 5 of the drawings, iixed supports 170 and 171 for the tracks 2l and 22 are shown.

The exposing table mounted on its car can be used for inside Work entirely, the exposure being made by artiiicial light, or it can be used with the track, or With eithe as desired. Such a frame may be used with either a movable or a fixed track, as the :trame may be let down While supported on the elevated tracl; so as to be of the right height anc easily accessible around the sides, and it can be swung around so as to be let down on any side desired.

@ther objects and advantages Will be obvious to those skilled in the art or may be ascertained by pri ctical use of the invention.

The invention, in its broader aspects, is not limited to the particular construction shown, nor to any particular constructions by Which it has been Or may be carried into eilect, as many changes may be made inthe construction without departing from the main principles of the invention and Without sacrificing its chief advantages.

lWhat l do claim as my invention and desire to secure by lletters Patent, is

l. Ein exposing table apparatus including in combination an exposing trame, standards upon which said frame is mounted to swing about a substantially horizontal axis, a table upon which said standards are mounted, said table being rotatable about a substantially vertical axis, and means for swinging said standards to lower said exn Laosing table at one side of its base.

2. in exposing table apparatus including` in combination an exposing frame, standards upon which said trame is mounted to swing about a substantially horizontal axis, a table upon which said standards are mounted, said table being rotatable about a substantially vertical. axis, and means for swinging said standards about a substantially horizontal axis whereby said exposing table may be lowered at one side of its base.

3. An exposing table apparatus including in combination an exposing frame, standards upon which said frame is mounted to swing about a substantially horizontal axis, a table upon Which said standards are mounted to rotate about a substantially horizontal axis, means for varying the position o1" said exposing frame relative to said standards Without moving said standards,

and supporting means upon which said table is rotatable about a substantially vertical axis. Y

4. An exposing table apparatus including in combination an exposing trame, standards upon which said frame is mounted to swing about a substantially horizontal axis, a table upon which said standards are mounted to rotate about a substantially horizontal axis, and connections be Ween said t standards andsaid table tor rocking said standards about said horizontal axis While holding them against the action of gravity.

5. An exposing table apparatus including in combination an exposing frame, standards upon which said trame is mounted to swing about a substantially horizontal axis, a table upon which said standards are mounted to rotate about a substantially horizontal axis, and a rack and pinion connection between said standards `and said table, the rack being mounted on one and the pinion on the other.

6. An exposing table apparatus including in combination an exposing frame, standards upon which said trame is mounted to swing about a substantially horizontal axis, a table upon which said standards are mounted to rotate about a substantially horizontal axis, connections between said table and standards comprising a rack pivally mounted upon one and a pinion` rotatably mounted on the other and meshing with said racli.

7. An exposing table apparatus including in combination an exposing' tramestand ards upon which said frame` is mounted to swing about a substantially horizontal axis, a table upon which mounted to rotate about a substantially horizontal axis, supporting means upon which said table is rotatable about a subY stantially vertical axis, wheels upon which said standards are said supporting means are mounted, a traclr Y along which said Wheels travel and means for holding s'aid supporting means to the track When the standards and exposing table are rocked to one side.

8. in exposing table including in combination a car provided With Wheels, a table tixed to said car to rotate relatively tl ereto about a vertical axis, means for locking said car and table together. standards mounted upon said table, a horizontal shaft carried by said table and upon which said stand ards are mounted to swing, an exposing table mounted upon said standards to swing about a horizontal axis, and means for so swinging said standards. n

9. An exposing table including in combination a car provided with Wheels, a table iixed to said car to rotate relatively thereto about a vertical axis, standards mounted upon said table, a horizontal shalt carried by said table and upon which said stand* ards are mounted to swing, an exposing frame mounted upon said standards to swing about a horizontal axis, means for locking said standards and frame together, and means for so swinging said standards.

10. An exposing table including in conibination a car provided with wheels, a table fixed to said car to rotate relatively thereto about a vertical axis, standards mounted upon said table, a horizontal shaft carried by said table and upon which said standards are mounted to swing, an exposing frame mounted upon said standards to swing about a horizontal axis, a rack bar and a gear meshing therewith, said rack bar and gear being carried the one by said table and the other by one of said standards.

11. An exposing table including in combination a car provided with wheels, a table fixed to said car to rotate relatively thereto about a vertical axis, means for locking said car and table together, standards mounted upon said table, a horizontal shaft carried by said table and upon which said standards are mounted to swing, an exposing frame mounted upon said standards to swing about a horizontal axis, means for so swinging said standards, a rack bar and a gear meshing therewith, said rack bar and gear being carried the one by said table and the other by one of said standards.

12. An exposing table including in combination a car provided with wheels, a table fixed to said car to rotate relatively thereto about a vertical axis, meansfor locking said car and table together, standards mounted upon said table, a horizontal shaft carried by said table and upon which said standards are mounted to swing, an exposing frame mounted upon said standards to swing about a horizontal axis, means for so swinging said standards, means for locking said standards and frame together, a rack bar and a gear meshing therewith, said rack bar and gear being carried the one by said table and the other by one of said standards.

13. An exposing table including in combination a car provided with wheels, a circular track formed upon said car, a table pivoted centrally upon said car and having rollers running on said track, a horizontal shaft carried by said table, standards spaced apart and hinged upon said horizontal shaft, a rack bar and a gear meshing therewith, one carried upon one of said standards at the opposite side from said shaft and the other upon said table, and a frame mounted between said standards to swing horizontally.

14. An exposing table including in combination a car provided with wheels, a circular track formed upon said car, a table pivoted centrally upon said car and having rollers running on said track, means for fastening the table and car together, a horizontal shaft carried by said table, standards spaced apart and hinged upon said horizontal shaft, a rack bar and a gear meshing therewith, one carried upon one of said standards at the opposite side from said shaft, and thel other upon said table, and a frame mounted between said standards to swing horizontally.

15. An exposing table including in combination an elevated track, a support mounted upon said track, an exposing frame, standards upon which said exposing frame is pivotally mounted, said standards being mounted upon said support to swing between a position above said support and a position beside said support carrying with them said exposing frame, said track and support being constructed to preserve said support upright when said standards and frame are in either position.

16. The combination with a track extending horizontally from a window opening outwardly, and a track within the building adapted to rest upon the floor of the building, means for elevating said inner track into alinement with said outer track and for lowering it to the ioor of the building and a car adapted to run on said tracks and on the floor and an exposing frame movably mounted on said car, to be rotated in a plurality of directions.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

GEORGE R. CORNWALL.

Witnesses:

JOHN D. MORGAN, FRANK E. DRISCOLE.

Copies of this patent may be obtained tor five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

